Gessiilschae-t



F. HAARMANN.

DEVICE FOR CLOSING TH`E TAP1 HOLES IN SMELTING FURNACES. APPLICATIONFILED SEPTA, 1920.

1,401,072, Patented Deu-20, 1921.

UNITED stares FRIEDRICH HAARMANN, OE' ESSEN, GERMANY, ASSEGNUR EO FRIED.KRUPS? AKTEEN- GESELLSCEAEVT, 0F ESENON-TEEERUHR, GERMMQ'Y.

DEVICE FOR CLOSNG THE TAP-HOLES EN SMELTNG-LFURNAGES.

Application filed September T0 all whom t may concern.'

Be it known that l, FRIEDRICH HAAR- rifiNN residing,` at Essen,`Germany, a citizen c oi the German Republic, have invented a certainnew and useful improvement in Devices tor Closing the rlap-l-loles 1nSmelting- Furnaces, (for which l have filed application in Germany,Sept. 6, 1918,),035 which the tollowing is a specication.

This invention relates to a device for closing the tap hole in smeltingfurnaces by means off a pivotally mounted arm, which carries a plug, andwhich arm is so moved, that the plug is only plunged toward the end oi"its closing movement into the metal issuing)- from the tap hole of thefurnace.

The ooj ect oi" the invention is to provide a. device of this kind whichshall be as simple as possible and work reliably.

rlhe invention will he further described with reference to theVaccompanying drawing which shows a side elevation of a construction ofthe device diagrammatically according to the invention.

In the wall A. of the furnace is arranged the tap hole al, whichestablishes connection hetwen the smelting chamber a2 and the dischargechute L31 To the external surface oit the furnace or iframe a4 is fixeda bearing device a5, to which a crank arm or link B is pivotallyconnected by means of a pin a, in the bearing device t5 is also mounteda shaft C, which carries a crank arn'i C1 rigidly connected thereto. Thetwo crank arms B and C1 are pivotally connected at their ends remotefrom the bearing device a5 by pins 711 and 02 to a coupling member D soform# rlhe coupling neemher ing a quadrilatei'al. D has an extension D1pointing toward the tap hole al ot the turn-ace to the tree end of whichis ixed a spike Z2 on which is mounted `the plug not shown in thedrawing. The

shaft C carries finallyl an arm c3 to which a handle E is pivoted, andalso another arm c4' to which is attached a counterweight F.

lfVhen the tap hole is open, the parts assume the position shown by dotand dash line in the drawing in which theyare held by the counterweightF. Tfi/'hen the tap hole is to be closed, the plug, which is composed ofclay or the like, is placed on the spike Z2 and then the entire deviceswung downward by pulling down the handle E. In its de- Epecicaton ofLetters l'atent.

Patented Bec. 2d, T3213..

i, ieee. sei-iai uo. license.

scent the plug moves over a steep downward pathshown by dot and dashlinesV in the drawingV and plunges only toward the end oi' its closing`movement into the metal issuincr troni the tap hole.

lClaims.

l. A. device for closing; the tap hole of smelting' urnaces comprisingframe, a crank arm mounted thereon, a rod pivotally connected to saidcrank arm at a point lying.;` between the ends of the rod, a plug` forclosing said tap hole secured on the one end of said rod, and meansinovahly connecting the other end ci the rod to said frame.

2. A device for closing the tap hole oi sineltingv furnaces comprising`a traine, a crank arm. mounted thereon, a rod pivotally connected tosaid crank at a point lying between the ends of the rod, a plug ttorclosingl said tap hole secured on the one end of said rod, and a secondcrank arm mounted on said trame at a distance away troni saidfirst-named crank arin and pivotally connected to the other end of saidrod.

3. A devicei'or closingT tap holes of smelting,1 furnaces cornprisino atraine, a rod and a plug' mounted on said rod, and a dual linkconnection between said rod and vtrame with the dual links substantiallyparallel for movahly controlling` the movement oi said rod andpluggrelative to said trame.

a. ,si device for closing` tap holes of smelting furnaces, comprising atraine, a rod and ping mounted on said rod, two link connections betweensaid rod and traine forininZ-g a four sided ligure with the rod side ofsaid linked figure ,forming an acute angle with said frame.

5. .A derbe 'for closing tap holes of smelting' furnm es, comprisi aframe, a rod and a plug mounted on said rod, two link connectionsbetween said rod and frame formn ino` 'four sided ligure with the rodside of s linked ngure torming an acute angle FREDRECH HAARMf/ili lnpresence of- HANs Go'rTsMANN, doser Arnnfrz.

